Patents by Inventor Ramesh C. Doshi

Ramesh C. Doshi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Aperiodic struts for enhanced blade responses
    Patent number: 6789998
    Abstract: A system and method for reducing blade strain on the fan blades of an air cycle machine is proposed. The method involves a strut arrangement that is positioned in a cylindrical air passage upstream from the fan assembly. The strut arrangement includes at least three struts, wherein the at least three struts are separated by unequal degrees of separation along the circumference of the air passage. The strut arrangement effectively reduces the strain on the blades of the fan assembly.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: September 14, 2004
    Assignee: Honeywell International Inc.
    Inventors: Robert P. Chen, Sasha M. Ablitt, Ramesh C. Doshi
  • Aperiodic struts for enhanced blade responses
    Publication number: 20040047722
    Abstract: A system and method for reducing blade strain on the fan blades of an air cycle machine is proposed. The method involves a strut arrangement that is positioned in a cylindrical air passage upstream from the fan assembly. The strut arrangement includes at least three struts, wherein the at least three struts are separated by unequal degrees of separation along the circumference of the air passage. The strut arrangement effectively reduces the strain on the blades of the fan assembly.
    Type: Application
    Filed: September 6, 2002
    Publication date: March 11, 2004
    Applicant: Honeywell International, Inc.
    Inventors: Robert P. Chen, Sasha M. Ablitt, Ramesh C. Doshi
  • Axial flow turbo-machine fan blade having shifted tip center of gravity axis
    Patent number: 6059532
    Abstract: A high aspect ratio, low solidity fan blade of an axial flow air cycle machine has a local tip center of gravity axis that has been shifted ahead of an elastic axis. The center of gravity axis can be shifted by clipping the tip of the blade at the trailing edge, by undercutting a rear portion of the pressure surface, or by sweeping forward leading and trailing edges of the blade by about five degrees (without clipping or undercutting the blade).
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: May 9, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Robert P. Chen, Terry L. Morris, Ramesh C. Doshi
  • Reverse pitot air filter
    Patent number: 5131807
    Abstract: An inertial filter includes a pitot or probe extending into the main stream of a turbomachinery scroll, an open end portion of the probe being directed downstream. The probe also includes a cowling to orient or inertially swirl the airflow about the probe.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: July 21, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Richard L. Fischer, Ramesh C. Doshi, Terence P. Emerson